Trench Cover Grating | Drainage Cover Grating | Hydwiremesh - HengyueDa (Tianjin) International Trade Co., Ltd.

Trench cover

Trench cover grating is a heavy-duty metal grating specifically designed to cover drainage trenches, cable channels, and service ducts while supporting pedestrian and vehicular traffic. Each cover is manufactured by welding load-bearing flat steel bars and twisted cross bars together to form a rigid, open, and slip-resistant surface. The open pattern allows water, oil, and debris to drain freely into the trench below, preventing surface flooding and keeping walkways and traffic areas clean and safe.

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Product Overview

Trench cover grating is widely used in industrial plants, power stations, chemical facilities, municipal drainage systems, and infrastructure projects. Flat bar sizes, thicknesses, spacing, and cross bar spacing can all be customized to match specific load requirements, and the covers are available in stainless steel grades 304, 316, and 316L for corrosion resistance in demanding environments.

Technical Specifications

Product Type

Trench Cover Grating

Flat Bar Width / Height

20mm, 25mm, 30mm, 32mm, 35mm, 40mm, 50mm, 60mm, and custom sizes

Flat Bar Thickness

3mm, 4mm, 5mm, and other custom thicknesses

Flat Bar Spacing

20mm, 30mm, 40mm, 50mm, 60mm. Minimum center-to-center spacing 15mm.

Cross Bar Spacing

50mm, 100mm standard. Custom widths such as 30mm, 40mm, 60mm, 80mm available.

Cross Bar Type

Twisted steel cross bar or plain round bar

Material

Stainless steel 304, 316, 316L, and carbon steel, galvanized steel, aluminum

Surface Finish

Hot-dip galvanized, painted, pickled, or mill finish

Customization

Flat bar width, thickness, spacing, cross bar spacing, and overall dimensions can all be customized

Features and Benefits

Open pattern allows efficient drainage of water, oil, and debris
High load capacity for pedestrian and vehicular traffic
One-piece welded construction for structural rigidity
Slip-resistant surface for safe walking and working
Available in stainless steel 304, 316, and 316L for corrosion resistance
Lightweight compared with solid steel plate of equal strength
Easy to install, remove, and maintain
Long service life with minimal maintenance
Custom flat bar sizes, thicknesses, and spacings available
Bulk container loading optimized for export

Flat Bar and Cross Bar Options

Flat Bar Width / Height

20mm, 25mm, 30mm, 32mm, 35mm, 40mm, 50mm, 60mm, and custom sizes to match load requirements.

Flat Bar Thickness

3mm, 4mm, 5mm as standard, with other thicknesses available on request.

Flat Bar Spacing

20mm, 30mm, 40mm, 50mm, 60mm. Minimum center-to-center spacing of 15mm is achievable.

Cross Bar Spacing

50mm and 100mm are standard. Custom widths such as 30mm, 40mm, 60mm, and 80mm are also available.

Typical Applications

Industrial Plants

Drainage trench covers for factories, refineries, and processing facilities.

Municipal Drainage

Stormwater and sewage trench covers for public infrastructure.

Power Plants

Corrosion-resistant covers for cable trenches and cooling water channels.

Chemical Plants

Stainless steel covers for chemical drainage and process trenches.

Food and Beverage Facilities

Hygienic stainless steel trench covers for wash-down areas.

Parking Areas

Load-bearing covers for vehicle traffic over drainage channels.

Warehouses

Durable covers for internal drainage and service ducts.

Infrastructure Projects

Trench covers for bridges, tunnels, and public works structures.

Material Options

Stainless Steel 304

General-purpose corrosion resistance for industrial and municipal trench covers.

Stainless Steel 316

Enhanced corrosion resistance for chemical, marine, and coastal environments.

Stainless Steel 316L

Low-carbon grade for welded structures requiring maximum corrosion resistance.

Galvanized Steel

Hot-dip galvanized carbon steel for cost-effective outdoor drainage covers.

Aluminum

Lightweight and corrosion-resistant option for easy handling and installation.

Why Choose Hydwiremesh (Hengyueda)

Advantage	Details
20+ Years Experience	Two decades of metal grating manufacturing and export expertise.
Strict Quality Control	Multi-stage inspection ensures every cover meets specifications.
Global Reach	Customers in over 30 countries across industrial and construction sectors.
Flexible MOQ	Trial orders and bulk container orders both welcome.
Export Documentation	Complete customs clearance support and inspection reports.

Request a Quote for Trench Cover Grating

Get factory-direct pricing, free samples, and fast turnaround. Contact our export team today.

Email: 517714@qq.com

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Frequently Asked Questions

What is trench cover grating used for?

Trench cover grating is used to cover drainage trenches, cable channels, and service ducts in industrial plants, municipal drainage systems, power plants, chemical plants, food facilities, parking areas, and infrastructure projects.

What materials are available?

Trench cover grating is available in stainless steel 304, 316, and 316L, as well as carbon steel, galvanized steel, and aluminum to suit different environments and load requirements.

What flat bar sizes are available?

Standard flat bar widths include 20mm, 25mm, 30mm, 32mm, 35mm, 40mm, 50mm, and 60mm. Custom sizes are available on request.

What spacing options are available?

Flat bar spacing options include 20mm, 30mm, 40mm, 50mm, and 60mm, with a minimum center-to-center spacing of 15mm. Cross bar spacing is typically 50mm or 100mm, with custom widths such as 30mm, 40mm, 60mm, and 80mm also available.

Can the covers support vehicle traffic?

Yes. Flat bar size and spacing can be customized to meet specific load requirements, including pedestrian and vehicular traffic.

What is the lead time for bulk orders?

Standard lead time is 15 to 25 days after deposit, depending on order quantity and customization.

What payment terms do you accept?

We accept T/T, L/C, and other negotiable terms. Our sales team will provide detailed payment information with your quotation.

Related Tags

trench cover grating, trench cover, drainage cover grating, steel grating, stainless steel trench cover, 304 stainless steel grating, 316 stainless steel grating, flat bar grating, twisted cross bar grating, industrial drainage cover, load-bearing trench cover, galvanized trench cover

Hengyueda (Tianjin) International Trade Co., Ltd. Supplying quality wire mesh products worldwide for over 20 years.

Tianjin, China | www.hydwiremesh.com | 517714@qq.com

Heavy-duty steel grating

Heavy-duty steel grating is a high-load-bearing metal grating designed for the most demanding industrial and infrastructure applications. It is manufactured using thicker and wider load-bearing flat steel bars, with a thickness of 6mm or more and a width of 50mm or more, welded or pressure-locked with cross bars to form a rigid, one-piece structure. Heavy-duty steel grating is capable of supporting loads exceeding 10 tons, making it ideal for heavy traffic areas, large-span platforms, and critical structural flooring.

FRP Grating

FRP grating, also known as fiberglass reinforced plastic grating, is a high-strength, corrosion-resistant composite grating manufactured from glass fiber rovings and thermosetting resin. Unlike steel grating, FRP grating does not rust, does not conduct electricity, and is not affected by most chemicals, making it the preferred choice for chemically aggressive, humid, and electrically sensitive environments. It is widely used for walkways, platforms, stair treads, trench covers, and structural flooring in chemical plants, water treatment facilities, marine environments, and food processing plants.

Trench cover

Stainless Steel Grating

Serrated steel grating is a high-strength, slip-resistant metal grating manufactured with serrated edges on the load-bearing flat steel bars. The serrated profile creates additional grip points on the top surface of each bar, delivering superior traction in wet, oily, icy, or contaminated conditions. This makes serrated steel grating the preferred choice for industrial platforms, walkways, stair treads, drainage covers, and structural flooring where standard smooth grating may not provide sufficient slip resistance.